| 1 | /***************************************************************************
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| 2 | *
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| 3 | * Copyright 2000 by David Demirdjian. All rights reserved.
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| 4 | *
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| 5 | * Developed by David Demirdjian
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| 6 | *
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| 7 | * Permission to use, copy, or modify this software and its documentation
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| 8 | * for educational and research purposes only and without fee is hereby
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| 9 | * granted, provided that this copyright notice and the original authors's
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| 10 | * names appear on all copies and supporting documentation. If individual
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| 11 | * files are separated from this distribution directory structure, this
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| 12 | * copyright notice must be included. For any other uses of this software,
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| 13 | * in original or modified form, including but not limited to distribution
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| 14 | * in whole or in part, specific prior permission must be obtained from
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| 15 | * MIT. These programs shall not be used, rewritten, or adapted as the
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| 16 | * basis of a commercial software or hardware product without first
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| 17 | * obtaining appropriate licenses from David Demirdjian. The author makes
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| 18 | * no representations about the suitability of this software for any purpose.
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| 19 | * It is provided "as is" without express or implied warranty.
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| 20 | *
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| 21 | **************************************************************************/
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| 22 | typedef unsigned char uchar;
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| 23 | typedef unsigned short ushort;
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| 24 | #include "processingMMX.h"
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| 25 | #include <math.h>
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| 26 |
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| 27 |
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| 28 | // Filter stereoBuffer for a given disparity ...
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| 29 | //input:
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| 30 | //- [ptBuff-backStep, ptBuff] contains pixels filtered with sum_row
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| 31 | // [ptBuff, ptBuff+subImageSize] contains raw pixels
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| 32 | //- [ptBuff16, ptBuff16+2*backStep] contains pixels filtered with sum_row*avg_col
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| 33 | //output:
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| 34 | //- [ptBuff-backStep, ptBuff+subImageSize-backStep] contains filtered pixels
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| 35 | //- [ptBuff16, ptBuff16+2*backStep] contains pixels filtered with sum_row*avg_col
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| 36 | void StereoBuffer::filterSAD(int maskX, int maskY, uchar* ptBuff, ushort* ptBuff16,
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| 37 | int backStep, int subImageSize, int offset)
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| 38 | {
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| 39 | // ptBuff16 data from [0] to [backStep] come from previous iter
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| 40 | // sum_Row_mmx fills ptBuff16 from [2*backStep] to [2*backStep+subImageSize]
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| 41 | sum_Row_mmx(ptBuff , ptBuff16+2*backStep, subImageSize, maskX);
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| 42 | // avg_Col process data in ptBuff16 from [0] to [subImageSize]
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| 43 | avg_Col_mmx(ptBuff16+backStep , ptBuff-backStep,subImageSize, width, maskY);
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| 44 | // then copy ptBuff16 data [subImageSize] to [2*backStep+subImageSize]
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| 45 | // to [0] to [2*backStep] for next turn
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| 46 | copyMMX(ptBuff16, ptBuff16+subImageSize, 2*backStep*sizeof(short));
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| 47 | // init. SAD score
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| 48 | //initMinimumCorrelation(ptBuff-backStep, 0, imDepth+offset-backStep,
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| 49 | // corrScore+offset-backStep,
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| 50 | // corrScoreSec+offset-backStep, subImageSize);
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| 51 | } |
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